Electrical amplifier for spark-plugs



F. G. TOMPSETT.

APPLICATION FILED JULY 2| 1919.

Patented Dec. 2,1919.

. Frank TomPseLL,

ELECTRICAL AMPLIFIER FOR SPARK PLUGS.

LQSQSS.

n l To all 'whom t 'may concern:

rBANKVG. romrsnfr'rg'o'r oriana, NEBRASKA.,

lirtnc'rrucar. AMPLIFIER ron SPARK-PLUGS.

Be it known that I, FRANK G. ToMPsnT'r,

' a citizen ofthe United States, residing atplugs,

Omaha, of Nebraska, have invented certain new and useful Im rovements inElectrical Amplifiers' for park-Plugs,of which the following is aspecification. Y

This invention relates to electrical ampli-4 fiers, intensiiersor'spark-gaps, being an attachment for use 1n. connection with sparkasillustrated in the accompanyingdrawing,` wherein,

Figure- 1 is a plan view of the device. Fig. 2 is a sectional view online 2-2 of Fig. 1. Fig. 3 is a plan view of the insulatingplate. Fig. 4is a transverse section through the casing and insulating-plate, on line4-4 Fig. 5 is an end view ofthe cas- A of Fig. 1

ing s owing a brace and a tie-strip before Referrlng now to the drawingfor a more articular description, the ydevice consists, m art, of an.insulating-'plate 6 provided with apertures w near its ends, and havingnumerous apertures'? arranged in pairs for receiving eyelets 8, theeyelets of each pair being disposed at approximately uniform distancesfrom each other, the anges a and b of each eyelet being disposedrespectively of said air,

tiian the flanges b of the pair, thisv u on the upper and lower sides ofthe p ate 6.

Disposed in the aperturesfof the eyelets are screw-bolts 9, andinterposed between the keepers 10 and flanges b of the eyelets areelectrical conductors, arranged in pairs, the conductors for each pairbeing indicated at c and d, and it will be understood that theelectrical current,in its circuit to a sparkplug (not shown), will jumpfrom a flange a of one eyelet of a pair to an adjacent flange a theseAiianges being nearer together being desired. for'amplifying orintensifying the electric spark.

For the purpose-of excluding dust, rain, snow or accumulation ofmoisture from the Speelcationzof Letters Il'atent.

in the county of Douglas and State- *ratenteu nee. e, raie.

pplication led Iu1y2,1919, Serial No. 308,230.

flanges a of the several pairs of eyelets, to prevent short circuits, Iprovide a casing or housing-box, preferably of rectangular form and ofsheet metal, open at its top and bottom, its top having flanges 11projecting inwardly from its sides, and flangesv 12 pro- Vjcctinginwardly from its ends, eacli'rergl of the casing being incised toprovide a pair of prongs 13 and 14.

the lower side of the transparent Aplate 6, and. therefore operating asbraces, the prongs 13` engaging in apertures and being bent angularlyfor engaging the ends of the insulating-plate and the outer yfaces( ofthe ends of the housing-box, and operating as tiestrips for connectingthe insulating-@ate with the housing-box.

According to this construction it will be Y Numeral 15 indicates atransparent plate noted that the housing-box may be very convenientlymanufactured, and at a nominal expense; and that, by means of the prongs13 and lil: the parts may be readily assembled,the insulatlng-platebeing securely held bythe prongs 13 as a complete closure for the bottomof the box, and the transparent plate 15 being supported by the prongs14. A lso it will be noted that, by bending the prongs reversely to thedirection described, the parts may be readily separated wheneverrequired. -f

As best shown in Fig. 1, one of the eyelets of each pair has a ange aformed nonconcentric with its longitudinal axis, and therefore saideyelet may be rotated to dispose said iange farther from or nearer tothe iange ofthe eyelet ofthe same pair,

this being.a desirable feature of adjustment,

`so that the jump-spark may be greater or may be made, as found to be ofadvantage,

said changes being determined by the scope of the invention as claimed.y

What I claim as my invention and desire to secure by Letters Patentis,-'

1. In combination vwith a casing incised iio t provide prongs andsecondary prongs at its open bottonil and to provide .ianges pro.

v Jecting inwardly from its open top, a transparent plate adapted toprongs for Within the casln be engaged by the'rst name maintaining it inengagement flanges', an insulating-'plate having apertures v arrangedin' pairs adjacent to each, other and adapted to be engaged bythesecondary prongs for maintaining it in engagement with4 the bottom ofsaid casing, and a pluv rality of electrodes -in the apertures of saidinsulating-plate.

l 2. In combination With an elongated, rec- A Atangular*insulating-plate having apertures 'arranged in pairs adjacentto each other, me

tallic eyelets disposed in said apertures and Ahaving flanges disposedat the sides 0f said plate, 'metallic conductors electrically connectedWith'the eyelets, an elongated, rectangular, casing open at its bottomand hav-v ing flanges projecting linwardly from its open top, atransparent plate Within the casing,said casing. benigprovided withprongs for. engaging the insulating-plate for securing the latter to thebottom of said casing and having prongs for engaging theltransparent-.plate to dispose said plate in with Said.

engagement withl theinwardly vprojecting V,fianges of saidcasing. l f3.' In combination With'an insulating-v plate having apertures arrangedin pairs, the 'apertures of each pair being disposed at ap'- vproximaltely uniform distances from nach other, metallic eyeletsdisposed `in saidapertures and having circular flanges disposed atethe`sides of said plate, metallic conductors f being provided withprongs for securing the Wardly projectingflanges of the casing,"one

"of the eyelets of each pair being revoluble and having a ange disposednon-concentric with thelpngitudinal axis of saidl eyelet.

'In testimony Whereof,.I have affixed my signature in presence lof twowitnesses.

,FRANK e; .ToMPsETr f

